/**
 * Version: 1.1
 * Author: TangJun
 * Date: 2024-07-27
 */
public class Main {
    public static void main(String[] args) {
        String s1 = "abc";
        String s2 = new String("abc");
        String s3 = new String("abc");
        String s4 = "abc";
        System.out.println("s1==s2?" + (s1==s2));
        System.out.println("s1==s4?" + (s1==s4));
        System.out.println("s2==s3?" + (s2==s3));
    }
}
